I’ve no idea what’s going on here. My cursor behaves as expected in every program except Avast Free, when it disappears completely. Ony way I can use it is by using my touch screen. I have a HP Envy laptop, W10 up to date.
Any help gratefully accepted.
What exact version of Windows ?
What exact version of avast ?
Any other security (related) software installed ? (or was there)
Are you using a custom theme ?
Did you perform a repair of avast ?
Did you perform a clean installation of the latest avast version ?
Have you checked for newer drivers for the mouse/keyboard ?
Suggesting a repair and/or a clean install is better if the instructions to perform
Not all seeking help here are as knowledgeable as you Eddy. 
Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf
No problem with this win10 acer laptop and the latest version of avast free.
Is this in every avast window, I just wonder if using the Alt key might help as it places shortcut letters in the settings screens, perhaps it may have an impact on the cursor.
Bob without knowing more we can’t say where exactly the problem is.
It can be avast but also e.g. the default installed drivers on that laptop or the drivers of the mouse/kb etc.
More details can (and likely will) at least narrow down what exactly is causing the problem
Totally agree but when you recommend repair or clean install, provide the details. to make it easier for the novice.
Sorry I haven’t replied but Avast Forums did not email me to say there had been replies.
What exact version of Windows ? Windows 10 Version 1703 for x64-based Systems (KB4022725) 16/6/07
What exact version of avast ? 17.5.2302 (build 17.5.3559.0)
Any other security (related) software installed ? (or was there) Comodo Firewall.
Are you using a custom theme ? No.
Did you perform a repair of avast ? Yes.
Did you perform a clean installation of the latest avast version ? Yes.
Have you checked for newer drivers for the mouse/keyboard ? Yes.
Can’t suss this out. I also have an XP laptop and this doesn’t happen.
I’m running the same version of Windows 10 and have never experienced the problem. ???
I don’t know, I’ve uninstalled and reinstalled Avast. The cursor is visible at first, but after a day of use it disappears. Similarly running a repair job fixes it and then it breaks again. Weird.
Shugg, Have you tried HP support to see if they have a later touchpad/synaptics driver, no guarantee it’ll help but worth a try.
Thanks for that, will check it out.
Hello, in case anybody is still reading this topic: it’s a year later, I’m running the April 2018 Windows version, and just installed the newest version of Avast Free. I’m having the exact same problem. The pointer disappears when, and only when, I enter the Avast window.
Have you tried the following ???
Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A
I ran the repair and then restarted the PC. The problem is gone. Thanks for your help.
You’re welcome.